MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


AgentTesla


Vendor detections: 14


Intelligence 14 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8
SHA3-384 hash: 2ec101bd49eca7bb551f93a5cd0674825a50518358171254ac0081cc9e745c3f88bd77555e02c71d37da810dc75ae706
SHA1 hash: 5a06db2e2b48ef5057b0e70ec6b01efc79dccf45
MD5 hash: bf39643ab724504002fa64135ca80045
humanhash: golf-wisconsin-grey-one
File name:libbrotlicommon.dll
Download: download sample
Signature AgentTesla
Create hunting rule
File size:4'501'504 bytes
First seen:2025-08-25 08:41:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56ffbbdda63dbdf1891621098d41e68d (1 x AgentTesla)
ssdeep 49152:ASGqS5tU2TCuBIRmN+pxperodAtOxzipx92v03AlabiuYdpTv1Au/+NK+H0MEW7q:9uZ9EcPePuYdpTudKW
TLSH T14E26AD18A3E800A4D867D734CA69C333C6B1BD915B35D50F0A99D6461F73EA28F6F722
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
libbrotlicommon.dll
Verdict:
Malicious activity
Analysis date:
2025-08-25 08:43:00 UTC
Tags:
stealer auto-reg evasion exfiltration smtp agenttesla
Link:
https://app.any.run/tasks/802cf89e-d644-474d-bc94-2d6b496eacf0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/23376/
Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68ac21fe6eed937d746dae6f
Tags:
emotet virus
Result
Verdict:
Clean
Maliciousness:
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context crypto fingerprint masquerade microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/68ac22027137d684583b169c/reports/03df8d32-2545-4b8e-a521-faea18d1f280/overview
Verdict:
Malicious
Labled as:
W64/Agent.KHK.gen
Link:
https://www.hybrid-analysis.com/sample/6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8
Verdict:
Malicious
File Type:
PE
First seen:
2025-08-25T05:37:00Z UTC
Last seen:
2025-08-25T05:37:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/7aab5464-470a-4bbc-a021-9b4f81b11908
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1764349
Signature
Allocates memory in foreign processes
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1764349 Sample: libbrotlicommon.dll.exe Startdate: 25/08/2025 Architecture: WINDOWS Score: 100 36 ip-api.com 2->36 38 us2.smtp.mailhostbox.com 2->38 44 Suricata IDS alerts for network traffic 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 4 other signatures 2->50 9 loaddll64.exe 1 2->9         started        signatures3 process4 process5 11 rundll32.exe 9->11         started        14 cmd.exe 1 9->14         started        16 rundll32.exe 9->16         started        18 15 other processes 9->18 signatures6 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->64 66 Writes to foreign memory regions 11->66 68 Allocates memory in foreign processes 11->68 20 AddInProcess32.exe 16 4 11->20         started        25 WerFault.exe 16 11->25         started        27 rundll32.exe 14->27         started        70 Injects a PE file into a foreign processes 16->70 process7 dnsIp8 40 ip-api.com 208.95.112.1, 49687, 49704, 49711 TUT-ASUS United States 20->40 42 us2.smtp.mailhostbox.com 208.91.199.224, 49694, 49707, 49712 PUBLIC-DOMAIN-REGISTRYUS United States 20->42 34 C:\Users\user\AppData\Roaming\...\ZUHFqcY.exe, PE32 20->34 dropped 52 Tries to steal Mail credentials (via file / registry access) 20->52 54 Tries to harvest and steal browser information (history, passwords, etc) 20->54 56 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->56 58 Writes to foreign memory regions 27->58 60 Allocates memory in foreign processes 27->60 62 Injects a PE file into a foreign processes 27->62 29 AddInProcess32.exe 27->29         started        32 WerFault.exe 20 16 27->32         started        file9 signatures10 process11 signatures12 72 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 29->72 74 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 29->74 76 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 29->76
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8/
Threat name:
Win64.Trojan.Acll
Create hunting rule
Status:
Malicious
First seen:
2025-08-25 08:43:33 UTC
File Type:
PE+ (Dll)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nik5jzz5rnumptmryfga7kkmyn4b5vgw5cr6zfdmpetsbscdyx4a._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla discovery keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/250825-kmarpadm5x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Executes dropped EXE
AgentTesla
Agenttesla family
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/65a428d5-90f2-47a7-ac2c-8ab30348a49c
Unpacked files
SH256 hash:
6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8
MD5 hash:
bf39643ab724504002fa64135ca80045
SHA1 hash:
5a06db2e2b48ef5057b0e70ec6b01efc79dccf45
Link:
https://www.unpac.me/results/8e2e96b5-e3a1-4317-92a2-3efe0a6b722c/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

Executable exe 6a15d4e73d8b68c7cd91c14c0fa94cc3781ed4d6e8a3ec946c792720c843c5f8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/23376/

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